Executive Management Team

Gloria H. Everett President & Chief Executive Officer

Ms. Everett has more than 30 years of experience in insurance risk management, sales, marketing and management, including 15 years of experience in medical professional liability insurance with The Mutual.

Before joining The Mutual, Ms. Everett held key leadership roles at TIG/Fairfax, Fireman's Fund, NORCAL Mutual Insurance Company and Kaiser Permanente. She also served on the Board of Directors of the National Risk Retention Association (NRRA).

Ms. Everett currently serves on the Executive Committee of the Board of Directors of the PIAA and the UC Berkeley, Equity & Inclusion Advisory Board.

Christopher P. Mertes Chief Financial Officer & Executive Vice President

Mr. Mertes has more than 30 years of finance and management experience, including 25 years in medical professional liability insurance. He has been at The Mutual since 2003.

Mr. Mertes worked over 14 years at NORCAL Mutual Insurance Company. Previous to this, he held financial positions at Impell Corporation, MGM/UA Entertainment Company and Dun & Bradstreet, Inc.

Mr. Mertes was formerly on the Board of Directors of Hawaii Captive Insurance Council (HCIC).

Mr. Mertes earned his MBA with honors from St. Mary's College and a BA in Economics from UCLA.
Savannah Sellman Corporate Counsel

Ms. Sellman’s professional career has included all facets of the insurance industry. She has worked in the regulatory environment as both Assistant and Deputy Attorney General for the State of Pennsylvania in the Justice and Insurance Departments. She has served as in house counsel to NORCAL Mutual Insurance Company and PMSLIC in the capacities of Vice President and General Counsel and Secretary and General Counsel, respectively. She has been a partner in the law firms of Hancock, Rothert and Bunshoft, Duane Morris and Clyde & Co US, LLP. In her private practice, Ms. Sellman has represented insurance and reinsurance companies specializing in medical professional liability. Ms. Sellman is an ARIAS-certified international reinsurance arbitrator. She is a member of the California State Bar and ARIAS.

Ms. Sellman earned a Bachelor of Arts degree in 1971 from Beaver College for Women and a Juris Doctor in 1974 from Rutgers University School of Law.

Mark J. Spiro MD, FACEP Chief Medical Officer

Dr. Spiro has over 20 years’ experience in medical leadership. Prior to joining The Mutual as Medical Director in 2014, Dr. Spiro served as CEP America’s President & COO for approximately 15 years. Also, Dr. Spiro has actively practiced emergency medicine for 30 years.

Before he became CEP America's President & COO, Dr. Spiro served on the CEP Board of Directors and Executive Committee. He also served as Medical Director of a large emergency department. In addition to his service to CEP, Dr. Spiro has served on Boards both in and outside the healthcare field.

Dr. Spiro received his MD degree from Michigan State University and completed his Emergency Medicine residency in Ohio.

William K. Rietmann Vice President of Claims

Mr. Rietmann brings a wealth of experience in medical professional liability claims management to The Mutual, having served as an employee, manager and consultant for medical professional liability insurers and third party claims administrators over the past 25 years. Most recently, through employment with Sedgwick CMS, Mr. Rietmann was a regional supervisor for medical professional liability claims for the University of California medical centers and regional campuses. Prior to that, Mr. Rietmann was an account executive for St. Paul Companies, a senior consultant for MMI Companies and a claims investigator for NORCAL Mutual Insurance Company.

Mr. Rietmann earned his Bachelor of Arts degree from the University of California at Berkeley in 1984.